Install last stable version nginx ubuntu server lucid

##For install nginx new version on Ubuntu Server lucid 10.04, use this repositories:

add-apt-repository "deb http://ppa.launchpad.net/nginx/stable/ubuntu lucid main"
add-apt-repository "deb-src http://ppa.launchpad.net/nginx/stable/ubuntu lucid main"

#Add the maintainer authentication key, if necessary
gpg --keyserver [name of keyserver] --recv-keys [keyhash]
##In our example, you would import the maintainer's authentication key as follows:
gpg --keyserver subkeys.pgp.net --recv-keys C300EE8C
##Then, add the key to Ubuntu's apt trusted keys database with the following command
gpg --export --armor C300EE8C | sudo apt-key add -